I suggest you go read the SFN messaging manuals from BCB if you truly want to understand how interbank communication works. It is very well documented.
You clearly don’t know what you are talking about since you are conflating the STR (transfer reserve system) with TED (one of the many settlement methods in STR)
The goal with Pix was not to increase the total amount of value tranfered, but the amount of small micro-transactions, increasing fluidity and bypassing unecessary bureacratic processes.
TED still wins by raw value, but that amount is irrelevant. It is what is left after the small-fry micro-transactions were liberated from complicated, archaic systems. Those small-fry transactions provided a lot of fluidity to the market, which is the realm in which Visa and Mastercard were supposed to act (incresing consumption) but were unable to compete due to their own legacy devices. They really need to catch up with the competition: those systems and their culture are ancient relics.
You clearly don’t know what you are talking about since you are conflating the STR (transfer reserve system) with TED (one of the many settlement methods in STR)